<!DOCTYPE html>
<html class="loginHtml">
<head>
	<meta charset="utf-8">
	<title>登录--layui后台管理模板 2.0</title>
	<meta name="renderer" content="webkit">
	<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
	<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
	<meta name="apple-mobile-web-app-status-bar-style" content="black">
	<meta name="apple-mobile-web-app-capable" content="yes">
	<meta name="format-detection" content="telephone=no">
	<link rel="icon" href="../../favicon.ico">
	<link rel="stylesheet" href="../../layui/css/layui.css" media="all" />
	<link rel="stylesheet" href="../../css/public.css" media="all" />

</head>
<body class="loginBody">
	<form class="layui-form" style="height: 300px">
		<div class="login_face"><img src="../../images/face.jpg" class="userAvatar"></div>
		<div class="layui-form-item input-item">
			<label for="userName">用户名</label>
			<input type="text" placeholder="请输入用户名" autocomplete="off" id="userName" class="layui-input" lay-verify="required">
		</div>
		<div class="layui-form-item input-item">
			<label for="password">密码</label>
			<input type="password" placeholder="请输入密码" autocomplete="off" id="password" class="layui-input" lay-verify="required">
		</div>
		<div class="layui-form-item input-item" id="imgCode">
			<label for="code">验证码</label>
			<input type="text" placeholder="请输入验证码" autocomplete="off" id="code" class="layui-input">

		</div>
		<div class="layui-form-item">
			<button class="layui-btn layui-block" lay-filter="login" lay-submit>登录</button>
		</div>
		<div class="layui-form-item layui-row">
			<a href="javascript:;" class="seraph icon-qq layui-col-xs4 layui-col-sm4 layui-col-md4 layui-col-lg4"></a>
			<a href="javascript:;" class="seraph icon-wechat layui-col-xs4 layui-col-sm4 layui-col-md4 layui-col-lg4"></a>
			<a href="javascript:;" class="seraph icon-sina layui-col-xs4 layui-col-sm4 layui-col-md4 layui-col-lg4"></a>
		</div>
	</form>
	<script type="text/javascript" src="../../layui/layui.js"></script>
	<script type="text/javascript" src="login.js"></script>
	<script type="text/javascript" src="../../js/cache.js"></script>
	<script type="text/javascript"  src="../../js/jquery-3.4.1.js"></script>
<script>
    //产生验证码
    window.onload = function() {
        createCode()
    }
    var code; //在全局定义验证码
    function createCode() {
        code = "";
        var codeLength = 4; //验证码的长度
        var checkCode = document.getElementById("code");
        var random = new Array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R',
            'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'); //随机数
        for(var i = 0; i < codeLength; i++) { //循环操作
            var index = Math.floor(Math.random() * 36); //取得随机数的索引（0~35）
            code += random[index]; //根据索引取得随机数加到code上
        }
        checkCode.value = code; //把code值赋给验证码
    }
    //校验验证码
    function validate() {
        var inputCode = document.getElementById("ctl00_txtcode").value.toUpperCase(); //获取输入框内验证码并转化为大写
        if(inputCode.length <= 0) { //若输入的验证码长度为0
            alert("请输入验证码！"); //则弹出请输入验证码
        }
        else if(inputCode != code) { //若输入的验证码与产生的验证码不一致时
            alert("验证码输入错误!"); //则弹出验证码输入错误
            createCode(); //刷新验证码
            document.getElementById("ctl00_txtcode").value = "";//清空文本框
        } else { //输入正确时
            alert("正在登陆"); //弹出
        }
    }
</script>
</body>
</html>